alex rolls two standard number cubes. what is the likelyhood that the sum of the number is less than 4

1/12.

Step-by-step explanation:

The sum can be 2 or 3.

Possible ways to get this are (1, 1), (1, 2) and (2,1).

That is 3 ways out of a total of 36 possible outcomes.

So The answer is 3/36 = 1/12.